What I forgot to mention is that I do primarily highway driving. It's 22.5 miles one way to work and it's about 95% highway. My house is right off the highway as is my job.

Thanks for all of your replies, guys. Sorry for the lack of info earlier. No check engine light, the car seems to be running great and is an automatic. I didn't take into account that it is winter and I have two snow tires on the front, but that seems like a rather drastic reduction in mileage if yo...

Hey guys, I'm new to the site. I just bought an '07 Vibe with less than 21,000 miles on it. Thus far I love the car, but I've noticed the gas mileage sucks! I'm only getting an average of 19 mpg! I'm not a lead foot and I drive mainly highway. The ECM was replaced due to GM's recall. Any ideas? I'm ...